function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Fraser-Brunner, Alvin', 1],
    ['Gilbert, Charles H.', 2],
    ['Gilbert, Charles H. & Cramer, F.', 2],
    ['Gilbert, Charles H. & Hubbs, Carl L.', 6],
    ['Gill, T. N. & Townsend, C. H.', 2],
    ['Goode, G. B. & Bean, T. H.', 3],
    ['Günther, Albert C. L. G.', 3],
    ['Iwamoto, Tomio', 1],
    ['Iwamoto, Tomio & McMillan, P.', 1],
    ['Iwamoto, Tomio & Stein, David L.', 1],
    ['Iwamoto, Tomio & Williams, A.', 1],
    ['Matsubara, K.', 2],
    ['Maul, G. E.', 1],
    ['Okamura, Osamu', 1],
    ['Smith, J. L. B.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=28)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);